Debug STM32F4 with Jlink driver

1. 下載Windows版本 J-Link Software and Documentation Pack
https://www.segger.com/downloads/jlink/#J-LinkSoftwareAndDocumentationPack

2. 打開J-Link Commander，輸入命令與STM32F4連線
J-Link> usb

J-Link> device Cortex-M4

J-Link> speed 2000

J-Link> power on

J-Link> connect

3. 其它命令
3.1 mem32: Read 32-bit items.
J-Link> mem32 <Addr>, <NumItems>

3.2 w4: Write 32-bit items.
J-Link> w4 <Addr>, <Data>

3.3 loadbin: Load *.bin file into target memory.
J-Link> loadbin <filename>, <addr>

3.4 savebin: Saves target memory into binary file.
J-Link> savebin <filename>, <addr>, <NumBytes> <hex>

3.5 verifybin Veries if the specified binary is already in the target memory at the specified address.
J-Link> verifybin <filename>, <addr>